MIM Parts

SHAMUSPI · May 13, 2017

Hi folks,

RE: My PC 1911sc & E Series 1911sc and government. Would any of you good people know what parts in my S&W 1911's are made of MIM

I am looking to replace them with machined steel.

Much thanks.

BruceM · May 13, 2017

Maybe a Smith 1911 isn't for you if you want to start rebuilding the gun immediately due to the use of inferior components.

Bruce

armorer951 · May 13, 2017

According to reports I've read, only the thumb safety, grip safety, and the magazine release are MIM.

TAROMAN · May 13, 2017

Why replace parts that aren't broken?

gman51 · May 13, 2017

The big MIM scare is hardly worth it. MIM parts have been used in guns for many years but yet the guns aren't failing like would be expected by the MIM scare.
For instance timing gears on automotive engines have been made of plastic for many years also but they aren't cratering like one might think versus using steel gears.
I would say now just about any quality made gun even with MIM parts will outlast the owner. Why aren't the gun forums swamped with reports of MIM failures? Probably because it isn't happening.

regalsc · May 13, 2017

Gun manufacturers like Springfield & Smith&Wesson are pretty stupid to provide lifetime warrantys on guns with parts that will fail or do they know they won't fail like some think they will.

Tom S. · May 13, 2017

Can anyone even refer a post where a MIM part on a 1911 failed?

ken158 · May 13, 2017

SHAMUSPI said:
Hi folks,

RE: My PC 1911sc & E Series 1911sc and government. Would any of you good people know what parts in my S&W 1911's are made of MIM I am looking to replace them with machined steel.

Much thanks.

What would be the reason you want to replace MIM parts in your 1911? I have had forged parts break nun never MIM parts break...

Arik · May 13, 2017

TAROMAN said:
Why replace parts that aren't broken?

Because MIM is very much like dries brittle plastic. One or two shots and the whole thing crumbles.

There's a guy on another forum who competes with a Springfield TRP, which does have some MIM parts. So far nothing MIM has broken at a documented 120k rounds. A M A Z I N G

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epj · May 13, 2017

I have heard a few anecdotal reports of slide stops breaking on some MIM equipped 1911's. Not necessarily S&W's. That's out of 10's of thousands of guns equipped with MIM parts. If the MIM parts don't break almost immediately, they probably aren't going to.

WisconsinKen · May 13, 2017

In defense of the OP, if you are planning on "blinging" out your 1911 and you feel there is even a slight risk with MIM parts, why not find out what they are and swap those out first?

HCH · May 13, 2017

Search our forum for BG380 MIM barrels

Arik · May 13, 2017

I wouldn't compare a BG380 to the S&W 1911

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SHAMUSPI · May 13, 2017

Many of you have asked "why?". Fair question. I bought S&W because of their quality and reputation, despite there being many 1911's out there at much cheaper prices. My retort is, if there are far stronger parts available, why even consider having something break in a life and death situation? So, again, other than Armorer951, does anyone else know which parts are MIM?

BruceM · May 13, 2017

In defense of the OP, if you are planning on "blinging" out your 1911 and you feel there is even a slight risk with MIM parts, why not find out what they are and swap those out first?

His post does NOT lead me to believe that he is "blinging out" the gun but rather is in the process of running scared due to an internet enhanced MIM parts panic attack. Like I said, if he feels so strongly that MIM parts are inferior, possibly a Dan Wesson, Ed Brown, Wilson Combat or Les Baer is in order.

Then again, I could be wrong. Have been before-will be again.

does anyone else know which parts are MIM

Easy, the broken ones. By the way, have you ever seen forged parts broken? I have and more often than you think.

My retort is, if there are far stronger parts available, why even consider having something break in a life and death situation?

If the Russians have enough nuclear weapons to blow up the world 8 times and the USA enough to do it 12 times, which is the more powerful military?

Anyway...............

Bruce

HCH · May 13, 2017

Arik said:
I wouldn't compare a BG380 to the S&W 1911

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I should have explained better. The point was if a MIM barrel is OK, so are less critical and less stressed MIM parts.

ko41 · May 14, 2017

Hammer, sear, disconnector, thumb safety, slide stop and magazine release.

KO

fordson · May 14, 2017

ko41 said:
Hammer, sear, disconnector, thumb safety, slide stop and magazine release.

KO

Bravo .... a simple answer to a simple question, no lecture.

WisconsinKen · May 14, 2017

ko41 said:
Hammer, sear, disconnector, thumb safety, slide stop and magazine release.

KO

Said in my best imitation of "Gone in 60 Seconds".....That's a big list.....

Thanks for the list KO.

regalsc · May 14, 2017

I need to be fair to the OP. I'm in my 60's so all the guns for a lot of my life have been tool steel parts so I was apprehensive about mim also until I started reading about how it's been developed & it's other applications. If I had grown up with mim I probably would never have given it a second thought.

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